Preheat oven to 350F or 190C.
In a pan or skillet, heat cooking oil over medium heat. Stir in the onion and cook for 2-3 minutes, then add garlic and cook for 2-3 minutes more.
Add tomatoes and cook until tomatoes start to fall apart and form a sauce-like consistency. Season with salt, pepper and oregano. Stir occasionally. Allow to cool slightly before adding to the pizza crust.
Add sauce to the pizza crust, then the grated cheese and finish with chickpeas, red beet, and spinach.
Cook for 20 minutes in the oven or until the toppings are cooked and the edge of the crust is golden.
Optional: add a little bit of Parmesan shavings on top (optional).